27results about How to "Cost efficient" patented technology

The invention relates to the technical field of path planning, in particular to a cable path planning method based on deep learning and multi-objective optimization, and the method comprises the following steps: based on remote sensing image data, employing a multi-scale semantic segmentation deep learning model, combining with an auxiliary accessibility tagging sample, and recognizing the type of each ground feature; constructing a ground feature accessible confidence field with continuous spatial distribution; constructing a confidence coupling path cost function, endowing a penalty weight to an area with low ground feature confidence, endowing a passage reward weight to an area with high confidence, and generating a confidence coupling path cost function for path search; and constructing an improved heuristic function, and executing path search by adopting a multi-objective optimization algorithm to obtain a cable path scheme. According to the method, the historical total cost of the current node is considered, and the average confidence risk from the current node to the target direction is predicted, so that prospective avoidance is realized.

The invention aims to provide a gas turbine blade unstable flow visualization testing method, and belongs to the technical field of gas turbine experimental testing. Comprising the following steps: inputting boundary conditions and geometric conditions of a calculation model; numerical simulation flow field data under the condition are obtained through CFD calculation; if yes, the next step is carried out, and if not, a higher-quality grid is generated and returned to the encrypted grid, and CFD numerical simulation calculation is carried out again; selecting a proper resolution ratio based on an actual demand; generating a data source quantity and obtaining CFD calculation data according to the data source quantity; and outputting the three-dimensional transient visual flow field at the moment obtained by the checked high-precision CFD numerical simulation. The actual working condition of the gas turbine blade can be simulated, the test error of an actual instrument under the severe working condition is avoided, and the test difficulty is reduced. The precision of CFD numerical simulation is optimized, and the error is reduced, so that the credibility of the three-dimensional visualization cloud picture is improved.

The application discloses a kind of inventory optimization methods of charging facility spare parts replacement cycle and failure rate analysis, and the core process of this method includes building data layer, multidimensional data is cleaned and optimized, to realize standardized storage;Based on the LSTM algorithm, a multidimensional linkage prediction model is built, the loss effect of design defects and environmental factors is quantified to optimize the model, and the accurate spare parts replacement cycle threshold and equipment failure rate are output;According to the flow properties of spare parts, a differentiated inventory management mode is designed, and the optimal management mode of slow-moving parts is selected;A full-cost quantification model is built to calculate the total cost and service level under each mode;Finally, with the goal of minimizing cost, an intelligent inventory control model is built, which dynamically outputs inventory warning thresholds, replenishment quantities and times;Through the algorithmization and parameter quantification of the whole process, the application realizes fine and intelligent management of inventory, significantly reduces operating costs and stockout risk, and improves the stability of charging facilities.

A system for use in a vehicle includes at least two hydraulic damper assemblies. The system includes an injection pump in fluid communication with the hydraulic damper assemblies. The injection pump includes a barrel having an opening. The injection pump includes a plunger slidable within the barrel in a first direction and a second direction, the first direction causing hydraulic fluid to move into the barrel via the opening and the second direction causing hydraulic fluid to move out of the barrel via the opening. The system includes an actuator supported within the barrel and operatively coupled to the plunger.

This invention discloses an integrated planning method and system for a multi-jurisdictional unmanned aerial vehicle (UAV) service system. The method constructs an overall planning model with the goal of minimizing total cost, and sequentially establishes a front-end UAV allocation model and a back-end battery swapping station allocation model. With the objectives of minimizing average response time and minimizing the total expected queue length, respectively, the total number of UAVs, charging stations, and backup batteries, as well as the jurisdiction-level configuration scheme, are obtained. This invention achieves integrated collaborative planning of front-end transportation and back-end battery swapping, reducing the total system cost and average response time, balancing the operating load of each jurisdiction, effectively avoiding service interruptions due to a lack of available batteries during peak periods, and significantly improving system reliability and engineering practicality.

The embodiment of the invention provides a suspension system and a vehicle. The suspension system comprises a base, a linear motor, an elastic piece and a magnetorheological damper, the base comprises a support and a lower supporting seat, one of the support and the lower supporting seat is suitable for being connected with a vehicle body, and the other one of the support and the lower supporting seat is suitable for being connected with a wheel; the linear motor comprises a stator and a rotor, one end of the rotor is connected to the support, and the end, away from the support, of the stator is connected to the lower supporting base. The elastic piece is arranged between the support and the stator and provides elastic force between the support and the stator; the magneto-rheological damper comprises an outer cylinder and a damper piston which is arranged in the outer cylinder and can move linearly relative to the outer cylinder, the magneto-rheological damper is arranged in the rotor, the outer cylinder is connected to the rotor, and the damper piston is suitable for being connected to the lower supporting base. According to the scheme, the energy consumption of the suspension system is reduced, the performance is improved, the safety redundancy is improved, and the cost is reduced.

The utility model discloses a front suspension lower swing arm, a front suspension lower swing arm assembly and an automobile, which comprise a swing arm body, the swing arm body extends from a first end to a second end along the length direction, the first end forms a swing arm ball pin mounting part, the second end forms a bushing pin mounting part, and the swing arm body bends outwards between the first end and the second end and is provided with a sleeve mounting part. The swing arm body comprises a swing arm upper plate, a middle reinforcing plate and a swing arm lower plate, the middle reinforcing plate is arranged in an inner cavity between the swing arm upper plate and the swing arm lower plate, and the edge of the middle reinforcing plate is welded to the box-shaped structure; the bushing pin is connected to the bushing pin mounting part of the swing arm body; and the first sleeve is connected to the sleeve mounting part of the swing arm body, and the first sleeve and the lining pin are coaxially arranged. According to the utility model, miniaturization can be implemented, the strength is better, the performance is better, the strength, the rigidity and the buckling performance are improved to the greatest extent, the operation stability and the NVH performance are effectively solved, and meanwhile, the cost is optimal.

This invention relates to the field of electronic paste preparation technology, and discloses a low sheet resistance tungsten-copper electronic paste and its preparation method, comprising the following steps: Step 1, preparing tungsten-copper composite powder: spherical tungsten powder with a diameter of 1-10 μm and copper powder with a size of 1-3 μm are mixed by mechanical mixing, with a tungsten to copper weight ratio of 3:1-6:1. Before mixing, the copper powder needs to undergo graphene coating pretreatment; Step 2, preparing an inorganic binder: the inorganic binder includes, but is not limited to, the following components: glass powder, CuO, TiO2, La2O3, Pu6O11; Step 3, preparing an organic carrier: the organic carrier includes a solvent, an organic binder, and a thickener; Step 4, preparing the tungsten-copper paste. The tungsten-copper paste of this invention has widely available raw materials, a simple preparation process, and is suitable for mass production. Although graphene, a high-priced material, is added, the amount added is small and the performance is particularly excellent, making the cost of the tungsten-copper paste of this invention far lower than that of similar foreign products, resulting in a very high cost-performance ratio.

This invention discloses a method and device for monitoring patchy fog based on a visible light image sensor and a point laser, belonging to the field of atmospheric visibility monitoring technology. The device includes a linearly calibrated visible light image sensor, a point laser emitter mounted parallel to the sensor's optical axis, and a synchronization control and data processing unit. The core of the method lies in: synchronously controlling and alternately acquiring image pairs of the laser being on and off, performing differential analysis to eliminate background interference, and obtaining a pure laser atmospheric scattering signal; integrating along the laser spot normal direction to obtain an initial brightness profile curve; based on the fixed spatial pose relationship between the sensor and the laser, mapping the brightness curve in image coordinates to a corrected brightness curve in real spatial distance coordinates through a geometric correction model; calculating the mean and variance of the corrected brightness curve, and calibrating it using standard instruments; and finally simultaneously obtaining the average path visibility value and the patchy fog intensity index. This invention is low-cost, has strong anti-interference capabilities, and can effectively achieve quantitative identification and spatial positioning of patchy fog, making it suitable for large-scale deployment in scenarios such as highways.

The invention provides an indoor ultra-wideband transparent directional antenna, which comprises a transparent outer cover, a transparent bottom plate, a base, a first rhombus array and a second rhombus array, and is characterized in that each of the first rhombus array and the second rhombus array comprises four transparent oscillators, and the four transparent oscillators are arranged in a rhombus shape; the first rhombus array is connected with the first feed network, and the second rhombus array is connected with the second feed network. The diamond array can maximize the diagonal distance between the units, which is crucial for suppressing the grating lobes of the antenna, especially for suppressing the grating lobes at the high-frequency end. And the grating lobes can cause energy to radiate towards unwanted directions, so that the gain and efficiency of the antenna are reduced. The four transparent oscillator diamond arrays achieve good balance among performance, flexibility, complexity and cost.

This invention provides a thermal management system and method for a two-wheeled electric vehicle battery. The method includes: real-time acquisition of operating status data and environmental data of the two-wheeled electric vehicle; the operating status data includes at least riding speed, riding gradient, and battery temperature; the environmental data includes at least ambient temperature; calculating riding load parameters based on a preset load calculation model according to riding speed and riding gradient; and calculating the current battery temperature control threshold based on a preset dynamic threshold calculation model according to the riding load parameters and gradient data; comparing the battery temperature with the battery temperature control threshold and a preset low temperature threshold respectively, and generating corresponding battery temperature control commands based on the comparison results; and adjusting the battery temperature by heating or cooling based on the battery temperature control commands to stabilize the battery temperature to the target temperature range. This invention achieves efficient and safe precise battery temperature control, and has strong adaptability to all road conditions and significant cost advantages.

The invention provides a remote sensing data scheduling method and device based on a space grid, and relates to the technical field of remote sensing image processing. The method comprises the following steps: establishing a mapping index of remote sensing data and grid codes by constructing a multi-specification space grid coding system; after a user request containing parameters such as a space range and a time range is received, a target grid code is positioned; grid-level byte segmentation reading is realized based on file pointer offset, and real-time processing is completed in a memory; and finally, outputting in a standard WMTS / WMS format. The device comprises a grid management module, a scheduling engine module, a real-time processing module and a service publishing module. According to the scheme, preprocessing is not needed, the data scheduling efficiency is improved, multi-temporal data unified service and dynamic inlaying are supported, the problems that traditional remote sensing data service is large in resource consumption, and multi-temporal calling is difficult are solved, and the real-time service requirement of mass data is met.

The invention discloses a lithium ion halide solid electrolyte material as well as a preparation method and application thereof. The chemical general formula of a halide solid electrolyte is Li < x > MC < 4-y > F < x + y >, wherein 0 < x < = 2; x is greater than or equal to-x and less than or equal to y, and M is selected from one or two of transition metal elements Hf and Zr. The invention discloses a preparation method of a lithium ion halide solid electrolyte material. The halide solid electrolyte is used for preparing a solid electrolyte or a composite positive electrode of a lithium ion all-solid-state battery. By introducing F, on one hand, non-crystallization of the electrolyte is promoted, which is a reason for remarkably improving the conductivity of the electrolyte, and on the other hand, as the electronegativity of F is large, the high-voltage stability of the electrolyte is enhanced, so that the lithium ion halide solid electrolyte provided by the invention can be used for improving the conductivity of the electrolyte. And in a solid-state battery system, the material has relatively high ion conduction capability and good high-voltage stability and mechanical stability.

The utility model relates to the technical field of electroacoustics, concretely is a kind of high polymerization magnetic ultrathin magnet array device for plane diaphragm loudspeaker, including the backplate made of one metal sheet, one side of backplate is defined as working surface, and working surface has the air gap of openwork, and working surface also has multiple clamping claws;It also includes the magnet array of being located at working surface, and magnet array has multiple permanent magnets, and permanent magnet is respectively inlayed in working surface by clamping claw;Wherein, backplate has multiple through two sides' point gum mouth, and point gum mouth is distributed in the area of each permanent magnet and working surface contact, for exposing the local area of each permanent magnet, and the area of each permanent magnet exposed in point gum mouth is bonded with backplate by point gum.The process difficulty, efficiency, cost of assembly of the utility model are all superior to the in-mold insert process used in prior art, breakthrough light and thin design is realized, and under the condition of using same permanent magnet, the driving force of plane diaphragm is significantly improved.

The invention relates to a power module bridge (100), comprising a cooler (102) having a guide surface (116) with at least two power modules (12) having arranged semiconductor structure elements, each power module (12) being assigned a current guide path, the invention relates to a power module (12) having a current guide path which is designed as an injection-encapsulated copper element (122) and a phase bridge (128) and which is connected to the power modules (12) by means of a first pre-component (106.1) by means of a first integrally bonded connection, a signal adapter (118) being assigned to each power module (12), the signal adapter (118) being connected to the power modules (12) by means of an adhesive (902), the signal adapter (118) being connected to the power modules (12) by means of a second pre-component (106.1), and the signal adapter (118) being connected to the power modules (12) by means of a second pre-component (106.1). The signal adapter (118) has a plurality of press-in pins (120) and a contact surface (602), the contact surface (602) being contactable by means of bonding wire connections via bonding wires (124) to the semiconductor components of the power modules (12), and the power modules (12) being connected to the cooling body (102) by means of a second pre-component (106.2) by means of a second integrally bonded connection to the cooling body (102).

This invention discloses a water level error correction system and method for steam generators, belonging to the field of industrial measurement and control. The system includes a differential pressure sensor with a Wheatstone bridge as its core, a precision resistor connected in series in its power supply circuit, and a multi-channel signal acquisition and processing unit. The method simultaneously acquires the output voltages of the two channels of the bridge and the voltage of the precision resistor, first calculating the sensor chip temperature; then constructing two characteristic quantities—voltage and voltage difference—and intelligently judging the system operating condition based on their changes; finally, adaptively calling a pre-stored compensation model according to the operating condition, calculating the system static pressure, and performing comprehensive dynamic correction of the original differential pressure for static pressure error and temperature drift, thereby calculating the accurate water level. This invention eliminates the need for additional sensors, achieving real-time compensation for the inherent error of the differential pressure sensor under all operating conditions solely through innovative signal fusion and adaptive algorithms, significantly improving the accuracy and stability of water level measurement, while also being low in cost and simple in structure.

This utility model relates to a deep-sea LED driver control board with adjustable serial communication, belonging to the field of electronic control technology for deep-sea lighting equipment. It aims to solve the problems of existing deep-sea LED driver control boards being unable to adapt to small dry chambers, having low heat dissipation efficiency, and low integration. The device includes a control board module, a 40mm diameter circular driver board module, and a dry chamber encapsulation and heat dissipation structure. The control board module integrates a main control unit, multi-stage power supply, digital isolation, and RS485 serial communication unit. The circular driver board module integrates a boost driver and a current sampling feedback unit. The two are electrically connected via plug-in terminals. The overall volume is ≤20cm³, making it suitable for small deep-sea dry chambers with an inner diameter of 45mm. The dry chamber encapsulation and heat dissipation structure constructs a complete heat dissipation path from "driver board - heat sink - dry chamber shell - seawater." It features small size, high integration, high heat dissipation efficiency, and high control precision, and can be widely used in lighting systems for various miniature deep-sea exploration equipment.

The utility model provides an LED open circuit and short circuit detection circuit comprising an LED lamp group which comprises a first LED branch circuit, a second LED branch circuit and a third LED branch circuit; the first output end of the microcontroller outputs a first control signal, the second output end of the microcontroller outputs a second control signal, the third output end of the microcontroller outputs a third control signal, and the voltage sampling end of the microcontroller is used for sampling voltage; the LED control circuit comprises a driving control circuit and a voltage sampling circuit, and the voltage sampling circuit is used for connecting the positive electrodes of the branches of the LED lamp set to the voltage sampling end of the microcontroller one by one, so that the microcontroller can sample the voltage of any one of the positive electrodes of the branches of the LED lamp set one by one through the voltage sampling end. Compared with the prior art, the open-circuit and short-circuit fault detection function of three paths of LEDs can be realized by only one path of voltage sampling, so that the occupied area of a PCB (Printed Circuit Board) is smaller, the miniaturization design of a product is facilitated, and the cost is better.

Provided is a separator for a lithium secondary battery, the separator including: a porous polymer substrate; and a first binder layer formed on at least one surface of the porous polymer substrate and including a particulate type polyvinylidene fluoride (PVDF)-based binder polymer, wherein the first binder layer i) includes a caprolactone-based dispersant, or ii) has a surface roughness (Sa) of 0.12 µm to 0.22 µm.

This invention discloses a method and apparatus for determining product packaging schemes, relating to the field of computer technology. One specific embodiment of the method includes: sorting packaging materials in a set of packaging materials according to specifications, and sorting products in a set of products to be packaged according to volume; based on the sorted set of packaging materials and the sorted set of products to be packaged, determining optional packaging schemes for the set of products to be packaged; after determining each optional packaging scheme, if the currently determined optional packaging scheme has upgrade conditions, further determining subsequent optional packaging schemes based on the currently determined optional packaging scheme; calculating the packaging cost for each optional packaging scheme; and selecting the optional packaging scheme with the lowest cost as the preferred packaging scheme. This embodiment can, while meeting the specifications of multiple packaging materials in a warehouse, perform trial calculations on the allocation of packaging materials according to product volume and placement requirements, ultimately calculating multiple packaging schemes and determining the packaging scheme with the optimal cost.

The utility model discloses an electronic atomizer structure. The electronic atomizer structure comprises an oil cup assembly and a battery rod assembly, the oil cup assembly is detachably connected to the battery rod assembly, two stages of buckle protrusions are arranged on the outer side of the oil cup assembly, and clamping grooves corresponding to the buckle protrusions are formed in the battery rod assembly; when the oil cup assembly is pressed into the battery rod assembly until the first-stage buckle bulge is clamped in the first-stage clamping groove, a half-pressed state is formed; and continuously pressing until the second-stage buckle bulge is clamped in the second-stage clamping groove, so as to form a full-pressure state. According to the utility model, the tar cup assembly and the battery rod assembly are designed to be detachably connected and are separated in the storage stage and the transportation stage, and tobacco tar is sealed in the tar cup assembly and is isolated from the external environment; and the risk of oil leakage caused by influence of environmental factors on a weak sealing link in an assembling state of the oil cup assembly and the battery rod assembly is eliminated.

This utility model relates to the field of indoor antenna technology and discloses a novel indoor television antenna, including a base shell on which an upper shell is mounted. It also includes: two metal antenna elements mounted on the base shell; a signal amplification PCBA board mounted on the base shell; the metal antenna elements fixedly connected to the signal amplification PCBA board by bolts; a signal line fixedly mounted on the signal amplification PCBA board; and a capacitor fixedly connected to the signal line; and a mounting slot on the upper shell. The metal antenna elements of this utility model are produced using a stamping process, resulting in significantly lower mold costs and a mold opening cycle only one-fifth that of plastic molds. Each stamped metal antenna element can be adapted to a plastic base shell. Furthermore, the elements undergo a metallic surface treatment, resulting in a significantly superior texture and appearance compared to traditional antenna elements. This allows for greater flexibility in product design and enables users to enjoy a variety of styles and high-performance products at a lower cost.

This invention discloses a backdoor poisoning detection method for AI security testbeds that does not rely on clean data, relating to the field of artificial intelligence security technology. This method aims to solve the problems of existing poisoning detection methods relying on clean data, poor adaptability, and high computational complexity. It is primarily applied to general data cleaning and backdoor defense scenarios in AI security testbeds. The core steps include: employing an adaptive threshold control training strategy; after training for x rounds, processing sample loss in intervals; updating the loss with reverse gradient growth when the loss is above the threshold n, and setting the loss to 0 when the loss is below the threshold m; truncating and normalizing the early loss trajectory from the initial training to x rounds; extracting low-dimensional features using an LSTM-Attention-CNN hybrid model; converting the time-domain features into spectral-domain features using discrete cosine transform; and using DBSCAN density clustering + random forest classification to achieve poisoning sample detection and purification.

The utility model provides a kind of support assembly and computer.The support assembly is applied in the computer with front interface, the support assembly includes: front support, extension support and fastener;Front support is used in conjunction with front interface, and front support is equipped with expansion bay;At least part of extension support passes through expansion bay, and extension support is detachably mounted on front support;Front support is provided with positioning convex and limiting bay, and extension support is provided with positioning hole and limiting lock tongue;When positioning convex is clamped into positioning hole, and limiting lock tongue is inserted into limiting bay, extension support is fastened with front support by fastener and forms fastening connection.The support assembly has the advantages of good commonality, good expansibility and stable and reliable structure under the premise of meeting the expansion demand and cost optimization.

This invention discloses an anti-interference communication device and method. A constant current circuit is set between the master and slave devices. This circuit converts voltage or digital signals into a constant current signal, which is transmitted between the master and slave devices via a communication line. Utilizing constant current for transmission between the master and slave devices overcomes the problems of poor anti-interference capability, impedance mismatch, and signal instability in existing data transmission methods, thus reducing interference in the communication circuit. The current control scheme proposed in this invention uses inexpensive components, and the effective stabilization of the current in the communication circuit through circuit structure construction achieves stable signal transmission between the master and slave devices.

The invention discloses a store inventory dynamic management and sales demand adaptation optimization method, and belongs to the field of data processing and supply chain optimization. According to the method, historical sales data and cost parameters of all stores are centrally collected and cleaned; based on the cleaned data, calculating a sales rhythm factor K used for representing sales volatility and a demand balance factor M used for representing demand difference between the stores; dynamically correcting the calculation result of the classic economic ordering batch EOQ model by using K and M to obtain the optimal purchase batch of the central warehouse and the optimal replenishment batch of each store; furthermore, the overall optimization of the inventory cost and the response efficiency is realized based on a standardized split inventory unit, a priority distribution unit, real-time monitoring and intelligent allocation decision and parameter closed-loop optimization. According to the method, the problems of high inventory cost and poor adaptability caused by model stiffness, poor data quality and response lag of a traditional inventory management method are effectively improved.

The embodiment of the invention provides an inventory scheduling method and device, equipment and a medium, and relates to the technical field of inventory logistics. The method comprises steps that oil product scheduling configuration information in a target area is acquired, and the oil product scheduling configuration information comprises oil product types, historical demand data of each oil product, inventory replacement plan data, replenishment advance period and replenishment period data; based on the inventory replacement plan data and the replenishment advance period, establishing an inventory dynamic balance constraint containing a replacement warehouse-out item; based on the oil product dispatching configuration information, an optimization function with the purpose of minimizing the total operation cost is established, and the optimization function at least comprises cost items based on the inventory holding amount and the stockout amount; and based on the historical demand data, the inventory dynamic balance constraint and the optimization function, determining the optimal replenishment strategy of each oil product in each scheduling period. The method provided by the invention effectively solves the problem that the inventory scheduling is difficult to meet the comprehensive requirements of inventory replacement and enterprise operation in the related technology.